package com.java2207.group1.controller;

import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.read.builder.ExcelReaderBuilder;
import com.alibaba.excel.read.builder.ExcelReaderSheetBuilder;
import com.alibaba.excel.util.FileUtils;
import com.alibaba.excel.write.builder.ExcelWriterBuilder;
import com.alibaba.excel.write.builder.ExcelWriterSheetBuilder;
import com.java2207.group1.bo.CasesBo;
import com.java2207.group1.common.LayuiPageVo;
import com.java2207.group1.common.R;
import com.java2207.group1.listener.CasesConsultListener;
import com.java2207.group1.pojo.Cases;
import com.java2207.group1.service.CasesService;
import com.java2207.group1.vo.casesult.CasesBarVo;
import com.java2207.group1.vo.casesult.CasesPieVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.IOException;
import java.net.URLEncoder;
import java.util.List;
import java.util.Map;

/**
 * Lenovo 2022/7/26 12:01
 *
 *
 */
@RestController
@RequestMapping("/cas")
public class CasesController {

    @Autowired
    private CasesService casesService;

    /**
     * 分页查询内容
     * @param params
     * @return
     */
    @RequestMapping("/casList")
    public LayuiPageVo<Cases> caseLayuiPageData(@RequestParam Map<String, Object> params){
        return casesService.caseLayuiPageData(params);
    }

    /**
     * 添加病例信息
     * @param cas
     * @return
     */
    @RequestMapping("/addCas")
    public R addCase(Cases cas){
        int result = casesService.addCase(cas);
        if(result ==1){
            return R.ok();
        }else {
            return R.error();
        }
    }

    /**
     * 根据Id删除病例信息
     * @param id
     * @return
     */
    @RequestMapping("/deleteCas")
    public R deleteCase(Integer id){
        int result = casesService.deleteCase(id);
        if (result ==1){
            return R.ok();
        }else {
            return R.error();
        }
    }

    /**
     * 根据Id删除多条病例信息
     * @param ids
     * @return
     */
    @RequestMapping("/deleteCasByIds")
    public R deleteCaseByIds(String ids){
        int result = casesService.deleteCaseByIds(ids);
        if (result > 0){
            return R.ok();
        }else {
            return R.error();
        }
    }

    /**
     * 修改病例信息
     * @param cas
     * @return
     */
    @RequestMapping("/updateCas")
    public R updateCase(Cases cas){
        int result = casesService.updateCase(cas);
        if (result ==1){
            return R.ok();
        }else {
            return R.error();
        }
    }


    /**
     * 病例中 老人性别比例 柱状图
     * @return
     */
    @RequestMapping("/echartBar")
    public R echartBar() {

        List<CasesBarVo> list = casesService.caseBarData();
        return R.ok().data("casBar", list);
    }


    /**
     * 根据病例症状比例  饼状图
     * @return
     */
    @RequestMapping("/echartsPie")
    public R echartsPie() {
        List<CasesPieVo> list = casesService.casePieData();
        return R.ok().data("pie", list);
    }


    /**
     * 下载excel 模板
     * @param request
     * @param response
     * @throws IOException
     */
    @RequestMapping("/templateDownload")
    public void templateDownload(HttpServletRequest request, HttpServletResponse response) throws IOException {

        //下载excel 的 响应头
        response.setContentType("application/vnd.ms-excel");
        response.setCharacterEncoding("utf-8");

        //读取服务器上的模板文件 写到浏览器
        //得到模板文件的路径
        String realPath = request.getServletContext().getRealPath("/template/病例信息模板.xlsx");

        //根据文件路径 创建File 对象
        File file = new File(realPath);

        // 把File  对象转为 字节数组
        byte[] bytes = FileUtils.readFileToByteArray(file);

        // 下载的文件名 是中文  要进行转码  要不然会出现乱码
        String fileName = URLEncoder.encode("病例信息模板", "utf-8");

        // 告诉浏览器  下载文件
        response.setHeader("Content-Disposition", "attachment;filename=" + fileName + ".xlsx");

        //得到指向浏览器的输出流  向浏览器写输出
        ServletOutputStream outputStream = response.getOutputStream();

        // 把字节数组 输出到浏览器
        outputStream.write(bytes);

        outputStream.close();
    }

    @Autowired
    private CasesConsultListener casesConsultListener;

    /**
     * 读取excel 文件数据 存到数据库中
     * 导入病例
     * @param file
     * @return
     * @throws IOException
     */
    @RequestMapping("/import")
    public R importExcel(MultipartFile file) throws IOException {
        // 避免遇见请求报错
        if (file != null) {
            /**
             * 参数1  文件流
             * 参数2  读取到的数据封装到哪个数据类型中
             * 参数3  监听器  每读取一行数据 就会调用监听器中的 invoke  方法
             * */
            ExcelReaderBuilder read = EasyExcel.read(file.getInputStream(), CasesBo.class, casesConsultListener);
            // 得到 sheet 对象
            ExcelReaderSheetBuilder sheet = read.sheet();
            // 读取sheet
            sheet.doRead();

        }
        return R.ok();
    }


    /**
     * 导出病例数据
     * 把满足条件的数据 查询出来  写到excel 中  ，把excel 写到浏览器
     *
     * @param params
     * @param response
     * @throws IOException
     */
    @RequestMapping("/export")
    public void export(@RequestParam Map<String, Object> params, HttpServletResponse response) throws IOException {

        //下载excel 的 响应数据格式
        response.setContentType("application/vnd.ms-excel");
        response.setCharacterEncoding("utf-8");

        // 下载的文件名 是中文  要进行转码  要不然会出现乱码
        String fileName = URLEncoder.encode("病例信息导出", "utf-8");

        // 告诉浏览器  下载文件
        response.setHeader("Content-Disposition", "attachment;filename=" + fileName + ".xlsx");

        //得到指向浏览器的输出流  向浏览器写输出
        ServletOutputStream outputStream = response.getOutputStream();
        ExcelWriterBuilder write = EasyExcel.write(outputStream, CasesBo.class);

        // 得到 sheet 对象
        ExcelWriterSheetBuilder sheet = write.sheet();

        //准备满足条件的集合数据
        List<CasesBo> subjcts = casesService.casExcelData(params);

        // 把这个集合数据 写到 输出流
        sheet.doWrite(subjcts);
    }




}
